Valve



Oct. 23, 1951 v R. GoulRANDl 2,572,471

VALVE -Filed'march' 2, 1945 IN VEN TOR. Rene oaunci/ Patented Oct. 23, 1951 'fiUNITS'ED slr-Ares PATENT :VALVE v Rene Guaira-nd,NewYorkiNfYg. v Application March 2, 1945,S`e'riaFNef580j656 c claims. `(C1. 251-131,)-

fin-venticirrelates tcvalves-,r` and more Dare tieulariy to f valvesadapted for use; inaconneetion with air, gas;- and' othexfluidsi under:.1pres;ure

Valves now? in use forthis purpose. possess ceriairx#:de'ciencesy whiehxpreventthem fromffheing eftectiveunder ,'variousa workingizconditions; i @ne of: thesefdeciencies; consists in thefarrangement of. thepassages throughfthe valve housing @ricas-- ing-whereby theimposition of. pressure in aidirec.- tion.;opposite.v torthatin which itwi'sintended! that the; pressure shall `loef` imposed: rveryi :often :causes the; talvez towopen be lheld :inv-open; Position-'at .2 and-*wirr axialfraiignmentpcr at fleast with their axes ,otrthefsame'leve1; -and-'with-the valve seat disposed between? them: so that:A w-lrrerrl the'Y vaivet 3,2, vof@y conical plug ffermis# ina?seated' position asshowrr ineFig. L ieshuts dizcofmrnunication tween(thetwczpassages'ziarid:3. The outlet ends atimefwhen it scdesired. that thevaive shall re-n main closed. ."Another vdseiciemzyf fexistent. 'fin valves'of the type now in use, is leakage, andi which iszrveryoften.caused because ofthe `use of.x.packifngs' ativariouslvitai points irr thefstructure,

.Thefpresent .invention hasl for its primary rb` so; r .arranged disposedr that-'the open-ing Y' ci? the-.valve Aunder `air or`r other fuidf pressure# at #a tfmenotzdesired; .will not take-place. Another' objectf. of. the invention i-s'to'prcvideea valve in which the use of packingsI :likely-topermitleak- L age vunder pressure w-iiflf be obvi'ated.

'AnotherA :object -ofr the vim/enti'c-nI istoA provide anLYa-irvalveibcated between-a pair1 of passagesl andadapted toia-ilowcommunicatiorr between said passages'only'when the airI therein -is'of 'a pi'edetermined'pressure, the valve'loeing closed 'when a valvefof thisL character;"means*bywhich-"the pressure' one or-"more-air chambers'towhchtlre valve is connected', can be ascertained?, -wllerel'ovL the: ualvegwll; act: asf-an indicatingl device,

These and other f objects are'accompli'shedby ther-invention, a more partiel'xlarid'escl'riptionV of wil-ichs will?. hereinafter :appearan'd be setfortll-l in the vclaims appended hereto'.

drawings forming apart-"hereof, infwlriehllig. 11' isfzafxverticali'.seetional vieWfthrough the-val-ve, fas:

constructed inv accordance the invention;

,Witlr referenceto the''structureshawl-rr in-the drawings, t indicates theV valve;casingV or' housing which` may: be made in variousshapesf' according nut L29 a' usta'blevonthe threadedportion ofthestem 2511 Aewasherrfllinterposedfbetweerrthe nut-vIZSK-and. the. upper i face oi the iiexible da.`

phragm I 8, the diaphragm being clamped-be tweenfvv .thez-wwasheie 30 f an d the top of the i valve te the use to which it may be put,A andis' shown in 1a. generallycylindrical shape and provided arranged: 'diametrcaliy opposite"- tcvr one anotherL i head 32. s f

The marginaleedgelportion ci the diaphragm; is: elamiped-betweenffthe tcpedg-e-of the. casing4 t and a gasket 3|, by means off-ttheidomed-.capf member 2l which has the intern-all-y-v threaded skirt 22pv threadalclyA received on-,the threadedportion of the casing adjacent to itstop. .Diaphragm I8 is provided with theW annular rib` I9 received in a complementary groove` min the top of the. casing, while ther gasket. 3`Iu and the cap member 2t are also co-operatively lribbed andgrooved in the manner yclearly.seenr,in.1ig..

5 and' by means ofwhicha tight joint is secured at this point. The. arrangement4 shown 'also' permits of the rotation of the, cap 2l'I in tightening` the same in place without marring, or defacing thetop. of the. diaphragm l'8.y

The valveis useful in numerousl environments, suchas for example, the maintenance of' equal air pressure in thetwa tireson; one wheel of-Y a motor truck or trailer;` or 'at anyother point...

where equali'pressure i's desiredlintwo air chambers flanysort. In atire'arrangement as j ustv mentioned, `one ofthetires willl'be. connected'V to the`r passage 2 'and tl'iefother` to, the 'passage v3". Assumingithat' itI is desiredto 'Smaintaima pres-- case the spring 28 will be adjusted by manipulation of the nut 21 so that it will allow opening of the valve when a pressure of over 45 pounds is imposed on the valve. With the spring compression so adjusted, air is forced through the tire type valve 26 to pass through the tubular stem 25 to reach and build up pressure in the chamber 34 located below the valve 32. Said chamber is closed by a screw plug 35, and when the pressure in the chamber 34 reaches a point above 45 pounds, the pressure against the valve will force it open and hold it open while the continued flow of air will then proceed into the passages 2 and 3 to reach the tires or other air chambers to which the two passages are connected and innate the tires or ll the air chambers until the pressure desired is reached, which should be greater than the pressure required to maintain the valve in open position. As long as pressure in the tires or otherair chambers to which the valve is connected remains greater than the pressure required to open the valve 32, the greater pressure will hold the valve open and the air pressure in both tires or air chambers will remain equal. However, when the pressure in the tires falls below the predetermined level and below that required to maintain the valve in open position, the valve will close and communication will be shut oi between the two passages 2 and 3. It will also be noted that while the valve 32 is open to establish communication between the passages 2 and 3the stem 25 will be raised or projected out of the cap 2| to a considerable extent, such projection of the stem tending to act as an indicator to disclose the fact that suicient pressure exists in the two tires or chambers to maintain the valve in open position. When the pressure in the tires or chambers lowers to such an extent as to allow the valve 32 to close, the stem 25 will be in retracted position and will serve to indicate to the observer that insuicient air pressure exists in the tires or chambers. The stem 25 can be provided with calibrations, or color indications to at once indicate the position of the valve and thus show the air-pressure condition in the tires or chambers.

While I have shown and described the improved valve as being adapted for use in certain environments, it will be obvious that it has a multitude of other uses, as will be clear to those skilled in this art.

What I claim is:

l. A valve having a casing provided with a passage having outlets at its opposite ends, said outlets leading out of the casing, a valve seat in said passage, a plug valve adapted to t against the seat and when seated to shut oil communication between the end portions of the passage, a diaphragm in which the valve is mounted, a spring co-operating with the diaphragm to normally maintain the valve in closed position and cause it to close the inner ends of the passage, and closure means for the casing including a part for conning the marginal edge portion of the diaphragm between it and the casing.

2. A valve having a casing provided with a pair of diametrically opposite, axially aligned passages leading out of the casing, a valve seat located between the passages, a plug valve arranged to rest against the seat and when so seated to shut oilD communication between thepassages, the valve having a stem, a diaphragm surrounding the stem and supporting the valve,

a spring co-operating with the diaphragm to nora mally maintain the valve in closedposition, said diaphragm having its marginal edge supported on top of the casing, and a closure cap tting on top of the casing and clamping the edge portion of the diaphragm between it and the top ofthe casing.

3. In a valve, a pair of passages, a valve seat located between the passages, a plug valve arranged for seating against the seat to thereby shut off communication between the passages, a tubular stem secured to the valve and providing a passage through the valve, an air valve of the tire type located in the passage through the stem, the casing having a chamber at one end of the plug valve with which the passage through the stem is in communication, said chamber being maintained whether the plug valve is open or closed, a flexible diaphragm supporting the plug valve, spring means operative against the diaphragm to normally hold the plug Valve against the seat, and means on the casing for adjusting the compression of said spring means.

4. In a valve, a valve casing, a pair of passages leading out of the casing, a valve seat located between the same, a plug valve Iarranged for seating against the seat to thereby shut off communication between the passages, a tubular stem secured to the valve and providing a passage through the same, an air valve of the tire type located in the passage through the stem, the casing having a chamber at the inner end of the plug valve with which the passage through the stem is in communication, said chamber existingV regardless of whether the Valve is open or closed, a ilexible, disk-like diaphragm throughn which the stem extends, means on the stem for clamping the central portion of the diaphragm between it and the plug valve, a spring surrounding the stem and acting to urge the plug valve toward seating position, a closure cap tted on the casingV and having a central opening through which the stem is axially movable, andv means threadably mounted in the closure cap for adjusting the compression of the spring.

5. In a valve, a casing having a pair of axially aligned outlets leading out of the casing, a valve seat located between the outlets, a plug valve for seating against said seat and adapted when seatedto shut off communication between the outlets, a diaphragm secured to the plug valve and being exible to allow movement of the plug valve to or from the seat, a spring for urging/the plug valve toward seating position, means for adjusting the compression of the spring, and a chamber in the casing at one end of the plug valve and constituting a constant air space in which air pressure can build up against the end of the plug valve to urge the plug valve toward open position against the pressure of the spring.

6. In a valve, a casing having a pair of oppositely disposed, axially aligned passages leading, to the outside of the casing, a valve seat located between the passages, a plug valve for seating against the seat and when so seated to shut oilE communication between the passages, the valve having a stem extending out ofthe casing, the casing being provided with a closed chamber 1ocated below the valve and in which pressureis created` to urge the valve to open position, the valve having a stem extending out of the casing, a diaphragm through which the stemv extends, means for attaching the diaphragm tothe stem, the edge portion of the diaphragm being seated upon the top of the casing, the diaphragm being 5 6 provided near its edge with an annular rib, the UNITED STATES PATENTS top of the casing having an annular groove in Number Name Date which the rib on the diaphragm is received, a 189,451 Beck Aug 1I 1876' cap fitted on top of the casing and threadably 1 811,898 Jackson Aug 5J 1919 mounted on the casing and clamping the `edge 5 1374 571 Humme1 "A115121 1921 portions of the diaphragm between it and the 1:9941958 Moffett Mar' 19 1935 casing.

REN GOUIR I 2,299,079 Davls Oct. 20, 1942 REFERENCES CITED 10 FOREIGN PATENTS Number Country Date The followmg references are of record 1n the 596.938 France of 1925 le of this patent: 

